IPhone 5s to IPhone 6s upgrade price?

I know the iphone 6 should be out very soon. I love keeping up with the latest tech things. But let's face it. I'm not rich. I indeed have a iPhone 5s and I was wondering the price for an upgrade to a 6. Maybe a guess.

That would likely depend on your carrier, how far into the current contract you are & if they would even give that option.

$1 at Walmart. Its way in the back, in store only.

It would be whatever the phone costs. They don't charge you extra for having an older phone. Assuming the price structure doesn't change it would cost you between $300-$600 (depending on which model you get) USD plus any and all applicable taxes.